1.A solid cube of iron whose edge is 4 inches weig

发布时间:2021-02-19 21:31:27

1.A solid cube of iron whose edge is 4 inches weighs 20.8 lbs.What is the specific gravity of this sample of iron?Water weighs 62.4 pounds percubic food.2.Two electrons with the same nl and ml valuesa

网友回答

1.1 foot = 12 inches
由题可知,铁的密度是20.8/((1/3)^3)=561.6 pounds(ibs) per foor
而水的密度是62.4 pounds percubic food
相比和可知铁的密度是9 g/cm3
官方很明确地表示肯定只考国际单位制中的基本单位,所以不会考到英制单位,请放心.
2.两个电子的主量子数(层数)和磁量子数(伸展方向)相同.lz问题中的nl和ml全称是什么?麻烦给出.
选c
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